| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2002 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.tools.ant.types; |
| |
| |
| import java.util.Stack; |
| import org.apache.tools.ant.BuildException; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.util.regexp.Regexp; |
| import org.apache.tools.ant.util.regexp.RegexpFactory; |
| |
| /*** |
| * A regular expression datatype. Keeps an instance of the |
| * compiled expression for speed purposes. This compiled |
| * expression is lazily evaluated (it is compiled the first |
| * time it is needed). The syntax is the dependent on which |
| * regular expression type you are using. The system property |
| * "ant.regexp.regexpimpl" will be the classname of the implementation |
| * that will be used. |
| * |
| * <pre> |
| * For jdk <= 1.3, there are two available implementations: |
| * org.apache.tools.ant.util.regexp.JakartaOroRegexp (the default) |
| * Based on the jakarta-oro package |
| * |
| * org.apache.tools.ant.util.regexp.JakartaRegexpRegexp |
| * Based on the jakarta-regexp package |
| * |
| * For jdk >= 1.4 an additional implementation is available: |
| * org.apache.tools.ant.util.regexp.Jdk14RegexpRegexp |
| * Based on the jdk 1.4 built in regular expression package. |
| * </pre> |
| * |
| * <pre> |
| * <regexp [ [id="id"] pattern="expression" | refid="id" ] |
| * /> |
| * </pre> |
| * |
| * @see org.apache.oro.text.regex.Perl5Compiler |
| * @see org.apache.regexp.RE |
| * @see java.util.regex.Pattern |
| * |
| * @see org.apache.tools.ant.util.regexp.Regexp |
| * @author Matthew Inger <a href="mailto:mattinger@mindless.com">mattinger@mindless.com</a> |
| * |
| * @ant.datatype name="regexp" |
| */ |
| public class RegularExpression extends DataType { |
| /** Name of this data type */ |
| public static final String DATA_TYPE_NAME = "regexp"; |
| |
| // The regular expression factory |
| private static final RegexpFactory factory = new RegexpFactory(); |
| |
| private Regexp regexp; |
| |
| public RegularExpression() { |
| this.regexp = factory.newRegexp(); |
| } |
| |
| public void setPattern(String pattern) { |
| this.regexp.setPattern(pattern); |
| } |
| |
| /*** |
| * Gets the pattern string for this RegularExpression in the |
| * given project. |
| */ |
| public String getPattern(Project p) { |
| if (isReference()) { |
| return getRef(p).getPattern(p); |
| } |
| |
| return regexp.getPattern(); |
| } |
| |
| public Regexp getRegexp(Project p) { |
| if (isReference()) { |
| return getRef(p).getRegexp(p); |
| } |
| return this.regexp; |
| } |
| |
| /*** |
| * Get the RegularExpression this reference refers to in |
| * the given project. Check for circular references too |
| */ |
| public RegularExpression getRef(Project p) { |
| if (!checked) { |
| Stack stk = new Stack(); |
| stk.push(this); |
| dieOnCircularReference(stk, p); |
| } |
| |
| |
| Object o = ref.getReferencedObject(p); |
| if (!(o instanceof RegularExpression)) { |
| String msg = ref.getRefId() + " doesn\'t denote a " |
| + DATA_TYPE_NAME; |
| throw new BuildException(msg); |
| } else { |
| return (RegularExpression) o; |
| } |
| } |
| } |